Improvement in machines for washing and cleaning coffee



s. THOMPSON.

Coffee Cleaner. No. 10 ,407. Patentedflllatklfi, 1870.

l'ig 1 dished sna SAMUEL THOMPSON, 0F BALTIMORE, MARYLAND.

Letters Patent N 0. 108,407, dated October 1-8, 1870.

IMPROVEMENT IN MACHINES FOR WASHING AND CLEANING COFFEE.

The Schedule referred to in these Letters Patent and making part of the same Be it known that I, SAMUEL Tnozursox, of the city of Baltimore, in the State of Maryland, have invented a new and useful Machine for the purpose of Washing and Drying Coffee; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the annexed drawing making a part of this specification.

Figure 1 represents a perspective view of one portion of the apparatus, together with a central longitudinal and vertical section through the remaining portion of the same.

Figure 2 represents an end view of the apparatus, and of one-half of'the iiy-wheel. One portion of the end is represented as uncovered.

Figure 3 represents a central, longitudinal, and vertical section through one of the hollow journals.

Figure 4 represents the brush.

Similar letters of reference, where they occur in the separate figures, denote like parts of the machine in all of them.

To enable others skilled in the art to make and use my machine, I will proceed to describe the construction of the apparatus and the mode of using the same.

A represents the frame of the-machine, upon which the cylinder B is supported hy thc hollow journals The cylinder B is a. hollow cylinder, with closed heads, and may be made-of wood oriron, or any other suitable material, but wood is preferable,'inasmuch as metal is apt to discolor the cofi'ee \Vhen made of wood, it should be strengthened by iron bands.

0 represents the central water-pipe, connecting with the hollow journals a a, and so with the waterair The central water-pipe G is evenly perforated with small holes, so that the water may be evenly distributed through the coffee in the cylinder B.

The cylinder B is provided with three sets of doors, G, diametrically opposite to each other, on opposite sides of the cylinder, which are screen-doors, being covered-with a wire screen, so that the fine material, which is rubbed off from the coffee, may pass out.

D represents aset of steam-pipes, connecting, by means of the central water-pipe O, with the steampipc E. I

There should be three sets of these steam-pipes distributed evenly through the cylinder, at equal distances from each other.

The steam is admitted through the steam-pipe E, and passes, by means of a pipe, through the center of the water-pipe G, and thus enters the steam-pipes 1').

H represents the fiy-wheel, a half section of which which is seen in fig. 2.

J represents a iixed pulley.

K represents the movable pulley, to which --the power used for revolving the cylinder may be applied.

L represents the exhaust-pipe, through which the water that accumulates from the steam is allowed to pass off.

M represents the brush. placing bristles crosswise between a number of wires of suitable length, and then twisting the wires firmly together, and, whenthus twisted, the bristles and wires will have a spiral arrangement.

These brushes are similar to those now used to clean the flucs of boilers, and are made of a proper and convenient length. i

These brushes are fastened to the sides of the cylinder B, and placed at convenient intervals from each other, for the purpose of scouring'and rubbing the coffee. I

The cylinder B is a revolving cylinder. The water-pipe, h and the exhaust-pipe L are connected with the movable hollow journals a a. by steamoints N, as shown in the figures, so that the journals may turn therein, and he steam-tight.

The process of washing and drying coiiee by the use of the apparatus above described is as follows:

The cylinder, being charged with coffee, (a charge in an ordinary cylinder being twelve bags of coffee, each bag weighing one hundred and sixty pounds,) is put in motiona-nd allowed to revolve until the dust or othen foreign matter is ejected from the coffee.-

'Watcr is then admitted to the cylinder through the water-pipe F and the central water-pipe G, and applied to the coffee until the coffee is thoroughly washed and cleaned.

As soon as this is accomplished, the water is withdrawn, and steam is admitted through the steampipe E to the steam-pipes D, and applied until the coffee in the cylinder is completely dried.

Having thus fully described my machine for washing and drying coffee, I would state that Ido not lay any claim to the several parts of which this machine is composed, when used separately and independentl 11211; I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of the cylinder B, provided with the brushes M, with water-pipe O and steampipes D, constructed and arranged substantially as shown, and for the purpose set forth.

2. The apparatus herein described, consisting of the cylinder 13, sieves G, brushes M, water-pipe O, steampipes D and E, fly-wheel H, and pulleys K and J, when all constructed and arranged substantially as shown, and for the purpose set forth.

SAML. THOMPSON. [n s.]

Witnesses:

ORLANDO F. BUMP, Jonn B. MGGRAW.

This brush is made by 

